Empty pocket containing coins. A pocket-sized container is a flat- shaped container used to hold various small objects such as keys, coin, subway tickets , etc. That one does not know where to store and that hitherto encumber the pockets."
How good is Wikipedia?!? French translation, yes, but the point is made well. In reality it is a travel accessory. The ideal thing to throw in your suitcase and take out when you get to the hotel so you have somewhere to keep your phone, wallet, room key etc.
The Vide Poche (veed posh) is an amazing gift for someone who has everything. At worst, they'll on give it and the new recipient will be sure to love it.
If you're keen they are all up on the shop and ready to ship